Agilent Technologies VHS-4, Instruction Manual

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VHS-4 Diffusion Pump
xii
DRAFT 8/7/02
High Temperatures
❑ Hot Surfaces: Boiler temperatures reach 530 °F
(275 °C) which can cause serious burns. Always
ensure that surfaces have cooled to near room
temperature before touching them.
❑ Hot Cooling Water and Steam: The water used to
cool the pump can reach scalding temperatures.
Touching or rupture of the cooling surface can cause
serious burns. Water left inside Quick Cool coils from
previous use turns to steam when the pump is
reheated. This steam must be allowed to escape with-
out contacting personnel. Whenever possible, design
the water system with interlock valves so that power
cannot be applied to the pump unless water is flow-
ing in the main cooling coils (not Quick Cool coils).
High Voltages
❑ Diffusion pump heaters operate at voltages high
enough to kill. Design systems to prevent personnel
contact with high voltages. Securely attach promi-
nent hazard warnings. Personnel should always
break the primary circuit to the power supply when
direct access to the heater or wiring is required.